/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraGPUSystemTick.h
[FRHIUniformBuffer](API\Runtime\RHI\FRHIUniformBuffer) * GetExternalUniformBuffer ( const [FNiagaraComputeInstanceData](API\Plugins\Niagara\FNiagaraComputeInstanceData) & InstanceData, bool bPrevious ) const